Particle catcher for emission detection of mining explosion-proof rubber-tyred vehicle

Abstract

The invention discloses a particle catcher for emission detection of a mining explosion-proof rubber-tyred vehicle. The particle catcher for emission detection of the mining explosion-proof rubber-tyred vehicle is characterized in that when tail gas is primarily filtered through a filter screen to enter a filter element, due to the fact that the area of filtering holes is lower than the area of anair inlet, the natural pressurizing effect is achieved, the pressure of the tail gas is increased, then filtering and flow adjusting are performed through an filter layer on the innermost layer, filtering is performed through the rest two layers of filter layers, and finally the tail gas is discharged through a flow adjusting layer. According to the particle catcher, the structure is simple, cleaning is convenient, and the particle catcher is used for preliminarily filtering particulate matter at an exhaust tail gas analysis inlet of the explosion-proof rubber-tyred vehicle so as to protect atail gas detection sensor.

Description

technical field [0001] The invention relates to an emission particle catcher, in particular to a particle catcher used for emission detection of explosion-proof rubber-tyred vehicles, and belongs to the field of tail gas emission detection. Background technique [0002] With the widespread use of mining diesel engines, the analysis of exhaust gas from mining diesel engines has been paid more and more attention. In the exhaust components of mining diesel engines, PM, that is, solid particles, such as heavy metal compounds, lead compounds, black smoke and oil mist, etc., are often much higher than Road diesel locomotives; "MT 990-2006 General Technical Conditions for Mining Explosion-proof Diesel Engines" stipulates that the emission concentrations of CO and NOx in the exhaust of mining diesel engines need to use non-dispersive infrared analyzer (NDIR) and chemiluminescence analyzer (CLD) respectively For detection, the PM particles in the dust environment and exhaust gas will...

AI Technical Summary

Problems solved by technology

[0002] With the widespread use of mining diesel engines, the analysis of exhaust gas from mining diesel engines has been paid more and more attention. In the exhaust components of mining diesel engines, PM, that is, solid particles, such as heavy metal compounds, lead compounds, black smoke and oil mist, etc., are often much higher than Road diesel locomotives; "MT 990-2006 General Technical Conditions for Mining Explosion-proof Diesel Engines" stipulates that the emission concentrations of CO and NOx in the exhaust of mining diesel engines need to use non-dispersive infrared analyzer (NDIR) and chemiluminescence analyzer (CLD) respectively For detection, the PM particles in the dust environment and exhaust gas will cause damage to the elastic body or short circuit of the gas NDIR detector, which has a great impact on the exhaust gas analysis; the existing particulate filters are mostly used for road diesel. Locomotive exhaust detection, particle regeneration will change the original exhaust composition, and the volume is too large; and the shape of the exhaust port of rubber-tyred vehicles is different. Therefore, to solve this problem, a mining explosion-proof diesel engine exhaust particle separator is proposed.

[0003] There is also a "Car Exhaust Particle Catcher" with a publication number of CN2017103615073, which is a device for collecting and processing fine particles in the exhaust gas discharged from the car engine. The device can be easily taken out and installed. Directly maintain the filter element to improve the maintenance effect, and there are protective parts to protect the liner, but the exhaust pressure of the explosion-proof rubber wheeled vehicle is low, which cannot meet the requirements of exhaust boosting;

[0004] There is also a publication number CN2018106618152 "a diesel particle trap based on DOC and DPF", which introduces the exhaust gas emitted by the diesel engine into the trap, and the exhaust gas with black smoke particles enters the DOC assembly from the intake assembly. The DOC carrier in the DOC assembly removes the harmful gas in the exhaust gas, and the exhaust gas after the catalytic oxidation of the DOC assembly enters the DPF assembly, and the DPF ceramic carrier in the DPF assembly absorbs the soot particles and is processed by the DPF assembly The final exhaust gas is discharged into the atmosphere through the gas outlet assembly, and the carbon dioxide catalysis will destroy the gas components, causing errors in the emission test results

[0005] There is also a "diesel engine particle catcher" with a publication number of CN2015105399582. A smoke and dust separation device is installed in the lower casing to achieve the purpose of eliminating smoke and dust, and it will also destroy gas components.

[0006] The above-mentioned existing overrunning clutch cannot meet the disadvantages of pressurization and indestructible gas composition, and it is urgent to design a particle catcher with simple structure and easy cleaning, which is used for exhaust gas emission detection inlet protection exhaust gas detection sensor of explosion-proof rubber-tyred vehicles

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